Gas separation: processes – Solid sorption – With plural indirect heat transfer steps on solid sorbent or...
Reexamination Certificate
2007-11-27
2007-11-27
Lawrence, Frank M. (Department: 1724)
Gas separation: processes
Solid sorption
With plural indirect heat transfer steps on solid sorbent or...
C095S148000, C096S122000, C096S126000, C096S130000
Reexamination Certificate
active
11022616
ABSTRACT:
A system and method for removal of solvents, or other materials, from an exhaust stream, uses an active adsorption bed and a bed that is periodically regenerated. Electrically heated nitrogen may be used to regenerate the beds. A portion of the exhaust stream to be cleaned is diverted to a heat exchanger, so as to pre-heat the nitrogen used for regeneration. Liquid nitrogen, preferably from the same source as that used to provide gas for regeneration, is directed to the active bed, lowering its temperature and increasing its efficiency. The invention avoids the need for the use of steam to heat the nitrogen, and provides a system that is more efficient than those known in the prior art.
REFERENCES:
patent: 4092133 (1978-05-01), Kamiya et al.
patent: 4329158 (1982-05-01), Sircar
patent: 5152812 (1992-10-01), Kovach
patent: 5154735 (1992-10-01), Dinsmore
patent: 5203889 (1993-04-01), Brown
patent: 5367882 (1994-11-01), Lievens
patent: 5614000 (1997-03-01), Kalbassi et al.
patent: 5658369 (1997-08-01), Kusay
patent: 5702587 (1997-12-01), Clifford
patent: 5759236 (1998-06-01), Bruck et al.
patent: 5779768 (1998-07-01), Anand et al.
patent: 5904832 (1999-05-01), Clifford
patent: 5935525 (1999-08-01), Lincoln
patent: 6572681 (2003-06-01), Golden et al.
patent: 6984258 (2006-01-01), Niclout et al.
patent: 58-008729 (1983-01-01), None
Solvent Recovery Adsorption with Activated Carbon Inert Gas Regeneration, DEC Impianti (May 2004).
American Air Liquide Inc.
Cronin Christopher J.
Eilberg William H.
Lawrence Frank M.
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